When the pesticide is sprayed, it is affected by the weather and the external environmental factors, which will affect the effect of spraying pesticides and fail to meet the expected requirements. According to different weather conditions, the precautions for spraying pesticides are different. Note the following items for the need to spray pesticides:

First, do not use sewage to distribute more impurities in the sewage. It is easy to block the nozzle by using it, and it can also destroy the suspension of the drug and cause precipitation.

Second, do not use well water to dispense well water with more minerals. When these minerals are mixed with pesticides, they are prone to chemical action, forming precipitates and reducing the efficacy.

Third, do not apply pesticides in the wind and rain and the sun to spray the pesticide powder and liquid medicine; rainy days, medicine, liquid will be washed to reduce the efficacy; under the scorching sun, plant metabolism, leaf stomata Expansion, prone to phytotoxicity. Best spraying time: 8:00 am to 10:00 pm, around 5 pm.

Fourth, do not abuse pesticides according to the type of crops, control objects and the performance of the drug to use the corresponding pesticides, truly corresponding to the drug, the abuse of pesticides often cause phytotoxicity.

5. Do not use a single drug for a long time. It is easy to make the insecticide resistant and reduce the control effect.

6. Do not spray before the harvesting. The residual period of high-toxic pesticides is about 60 days; the residual period of high-efficiency and low-toxic pesticides is about 15 days. Spraying before harvesting is easy to cause food poisoning.

More pesticide knowledge , please pay attention to China Pesticide Network

1. It reinforce old asphalt concrete road surface and asphalt layer, and prevents damage ; 

2. It is used for rebuilding cement concrete road surface into composite road surface and restraining reflection caused by block contraction . 

3. It is used in road expansion and improvment project and crack caused by old and new combination position and uneven sedimentation ;  

4. It is used in soft soil base reinforcement treatment ,  is favorable for soft soil water separation and concretion,restrains sedimentation effectivly,distributes stress uniformly and improve overall strength of road base; 

5. It is sued for preventing contraction crack caused by new road semi-rigid base layer,and reinforces and prevents road surface crack caused by foundation crack reflection. 

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